MOLDING METHOD FOR SHIP PROPELLER

摘要

PURPOSE: A method for molding a propeller for a vessel is provided to use a skeleton pattern as a top mold and a solid pattern as a bottom mold. CONSTITUTION: A method for molding a propeller for a vessel includes the following: a top flask and a bottom flask are manufactured to form a top skeleton pattern and a bottom solid pattern(S100). Based on the bottom solid pattern, a bottom molding box is manufactured(S110). The bottom molding box is turned over(S120). The top skeleton pattern is arranged on the upper side of the bottom molding box(S130). Molding sand is introduced in the top skeleton pattern(S140). A partition is installed between the top skeleton pattern and the molding sand(S150). The top flask is arranged on the upper side of the bottom molding box(S160). Molding sand is introduced into the top flask and is cured to manufacture a top molding box(S170). The top molding box is separate from the bottom molding box(S180). The partition, the molding sand, and the top skeleton pattern are removed from the bottom molding box(S190). The top molding box and the bottom molding box are combined(S200).